Field evaluatiuon of poor performance in Standardbred trotters

Erck, Emmanuelle Van; Jakesova, V.; Lekeux, Pierre; Art, Tatiana

doi:10.21836/pem20060516

Cited by 8 publications

(6 citation statements)

References 25 publications

(16 reference statements)

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“…The main subclinical problems encountered in endurance horses were respiratory problems followed by exercise-induced rhabdomyolysis, locomotor disturbance and cardiac arrhythmias. This is in accordance with previous studies on other sport horses in which respiratory and musculoskeletal problems were the most frequently diagnosed subclinical diseases (Martin and others 2000, van Erck and others 2006, Wilsher and others 2006, Richard and others 2010). The most useful tests to reveal subclinical diseases appear to be SETs (in the field or on the treadmill) with concurrent HR recordings during exercise and recovery, measurements of blood lactate concentrations and muscular enzymes, in combination with airway endoscopy and cytology of the collected respiratory samples.…”

Section: Discussionsupporting

confidence: 93%

Subclinical diseases underlying poor performance in endurance horses: diagnostic methods and predictive tests

et al. 2011

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Thirty-eight endurance horses underwent clinical and ancillary examinations, including haematological and biochemical evaluation, standardised exercise tests both on a treadmill and in the field, Doppler echocardiography, impulse oscillometry, video endoscopy and collection of respiratory fluids. All of the examined poorly performing horses were affected by subclinical diseases, and most of them had multiple concomitant disorders. On the contrary, the well-performing horses were free of any subclinical disease. The most frequently diagnosed diseases were respiratory disorders, followed by musculoskeletal and cardiac problems. Poor performers exhibited lower speeds at blood lactate concentration of 4 mmol/l (VLA4) and at heart rates of 160 (V160) and 200 bpm (V200) on the treadmill and in the field, as well as slower recovery of heart rate.

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Section: Discussionsupporting

confidence: 93%

Subclinical diseases underlying poor performance in endurance horses: diagnostic methods and predictive tests

et al. 2011

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“…Lameness and respiratory problems are the most common causes of poor racing performance (Martin et al 2000;van Erck et al 2006;Wilsher et al 2006). Martin et al (2000) also referred to post exercise arrhythmias and subclinical myopathy as causes of poor performance.…”

Section: Poor Performance Anamnesismentioning

confidence: 99%

“…A field exercise test in Standardbreds can also be used to assess physiological or clinical limits to performance (Couroucé et al 1997(Couroucé et al , 1999Roneus et al 1999;Davie et al 2002;van Erck et al 2006).…”

Section: Field Testsmentioning

confidence: 99%

Physiology of equine performance and associated tests of function

Evans

2007

Equine Veterinary Journal

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This review addresses the physiology of performance horses in the context of functional tests aimed at assisting clinicians in the search for explanations of the individual's limitations, actual or perceived as below expectation. The intention is to assist clinicians who are faced frequently by owners or trainers seeking explanations for poor performance; and for research workers as a basis on which to proceed in their search for new methodologies, particularly those that can be applied in the field as for treadmill exercise. The review sets out fundamental physiological pathways, the entailment of which may represent a limiting factor to performance, while taking into account the individual's status, including anamnesis and the possibility of actual disease being present. Tests that assess the possible roles of several body systems, as causes of limited performance, are discussed. These systems include pulmonary, cardiovascular and neuromuscular systems. The evaluation of anaerobic and aerobic energy pathways is also discussed. Emphasis is given to the assessment of pulmonary ventilation by techniques such as spirometry and ergospirometry. These techniques are considered to be of particular potential for further development.

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“…A major limitation of these laboratory tests is the fact that they do not reflect exercise performed under genuine field conditions. Attempts have been made to measure

\dot{V}

O 2 peak in the field in horses . Increased resistance to airflow induced by the masks required by the procedure renders the

\dot{V}

O 2 peak measurements unreliable and presented unacceptable risks to the horses .…”

Section: Introductionmentioning

confidence: 99%

“…Attempts have been made to measure

\dot{V}

O 2 peak in the field in horses . Increased resistance to airflow induced by the masks required by the procedure renders the

\dot{V}

O 2 peak measurements unreliable and presented unacceptable risks to the horses . Recently a mask has been developed and validated that can accurately measure

\dot{V}

O 2 peak, airflows, and tidal volumes on a breath‐by‐breath basis under field conditions .…”

Section: Introductionmentioning

confidence: 99%

Efficacy of dexamethasone, salbutamol, and reduced respirable particulate concentration on aerobic capacity in horses with smoke‐induced mild asthma

Bond

Greco‐Otto

MacLeod

et al. 2020

Veterinary Internal Medicne

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Background Mild asthma in horses decreases racing performance and impairs gas exchange. The efficacy of treatment on performance is unknown. Hypothesis Treatment targeting lung inflammation improves V˙O2peak in horses with mild asthma. Animals Thoroughbred polo horses (n = 12) with smoke‐induced mild asthma. Horses were exposed to increased ambient particulate matter (35.51 μg/m3 [PM2.5]; day mean, centrally measured) from day −33 to 0, from bushfire smoke (natural model). Methods Prospective, randomized, placebo‐controlled, double‐blinded clinical trial. All horses completed 3 V˙O2peak tests, measuring aerobic and anaerobic variables: day 0 ‐baseline; day 16 ‐after dexamethasone (20 mg IM q24h; DEX, n = 6) or saline treatment (SALINE, n = 6), under improved ambient PM2.5 concentrations (7.04 μg/m3); day 17‐15‐30mins after inhaled salbutamol (1500 μg). Bronchoalveolar lavage and mucus scoring were performed on day −8 and day 20. Linear mixed effects models were used to examine the effects of timepoint and treatment group on BAL differential cell counts, mucus scores, aerobic and anaerobic variables. Results Horses’ mucus scores improved significantly from day −8 to 20 by 1.27 ± .38 (P = .01). There was a significant increase in V˙O2peak of 15.5 ± 4.0 mL(min.kg)−1 from day 0 to 17 (P = .002), representing an average (mean) increase in V˙O2peak of 13.2%. There was no difference in V˙O2peak between treatment groups (SALINE versus DEX) at any timepoint. Conclusions and Clinical Importance This study highlighted the key role of improved air quality on functionally important airway inflammation. Evidence provided is central to increasing owner compliance regarding improved air quality for the treatment and prevention of mild asthma.

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Field evaluatiuon of poor performance in Standardbred trotters

Cited by 8 publications

References 25 publications

Subclinical diseases underlying poor performance in endurance horses: diagnostic methods and predictive tests

Subclinical diseases underlying poor performance in endurance horses: diagnostic methods and predictive tests

Physiology of equine performance and associated tests of function

Efficacy of dexamethasone, salbutamol, and reduced respirable particulate concentration on aerobic capacity in horses with smoke‐induced mild asthma

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